Gaya APA

Ashford, N, J. et al (2011). Airport Engineering : Planning, Design, and Development of 21st Century Airports (E-Book) (4). England: John Wiley & Son inc..

Gaya MLA

Ashford, Norman, J.. et al. "Airport Engineering : Planning, Design, and Development of 21st Century Airports (E-Book)". 4 England: John Wiley & Son inc., 2011. E-Book.